Detent



Sept. 22, 1942. E. G. WILTON DETENT Filed March 24, 1942 2 Sheets-Sheet l Im'entar [fin are? WF/fa/z Sept. 22, 1942. E. G. WILTON DETENT Filed March 24, 1942 2 Sheets-Sheet 2 WW/6M Patented Sept. 22, 1942 DETENT Edward G. Wilton, or of one-half to Wash.

Mount Vernon, Wash, assign- Thomas Payne, Mount Vernon,

Application March 24, 1942, Serial No. 436,018 2 Claims. (Cl. Ida-530) My invention relates to improvements in detents for operating and control levers such as are used in connection with locomotive throttles, Johnson bars, emergency brakes on trucks and ordinary automobiles, and other machinery.

The principal object of the invention is to provide a simply constructed, eflicient detent for such levers which will not slip or become dis-1.

abled as a result of wear on the parts.

Other objects are to provide detent devices for such levers'providing for reducing wear to a minimum and which are durable and inexpensive to manufacture.

To the accomplishment of the above, and subordinate objects presently appearing, a preferred embodiment of my invention has been illustrated in the accompanying drawings, set forth in detail in the succeeding description, and defined in the claims appended hereto.

In said drawings:

Figure 1 is a view in front elevation of the preferred embodiment of my invention,

Figure 2 is a fragmentary view in rear elevation drawn to an enlarged scale,

Figure 3 is a fragmentary view in edge e1eva-' tion,

Figure 4 is a detail view in longitudinal section taken on the line 4-4 of Figure 1, and

Figure 5 is a view in transverse section taken on the line 5-5 of Figure 3.

Referring to the drawings by numerals, my improved detent has been shown therein as forming part of the equipment of a hand lever I of the usual type, with the exceptions presently noted, and which is pivoted, as at 2, adjacent one end thereof on the usual toothed sector 3 for edgewise swinging alongside said sector and to provide a short lever arm d on one side of the pivot 2 apertured, as at 5, for connection to a part to be operated, and a long manipulative lever arm 6 on the other side of the pivot 2 provided adjacent its end with the usual detent operating hand grip T pivoted, as at 8, to the arm 8.

The long lever arm 6 is provided opposite the teeth 9 of the sector 3 with a widened portion ID on which is rotatably mounted, by means of stud bolts H and; nuts l2, pinions l3 peripherally spaced apart laterally of the portion l6 and meshing with the teeth 9 of the sector 3.

A pinion dogging and locking plate it of elongated form is mounted on the long lever arm 6 for endwise sliding movement on said arm longitudinally of the latter, toward and from said a pair of small toothed pinions l3 andprovided with a toothed end l5 for, meshing with'the pinions II at the sides thereof opposite to the sides meshing with the teeth 9 of the sector 3. V

A bolt l6 extending through a longitudinal slot l! in the long lever arm 6 and through the plate H and equipped with a nut l8 secures the plate It to said lever arm 6 for sliding movement thereon. A pair of longitudinally extending edge guides IS on the plate ll are adapted to engage opposite side edges of the lever arm 6 to provide for maintaining said plate against lateral play.

A rod 20 pivoted at one end, as at 2|, to the hand grip I and having its other end suitably connected, as indicated at 22, to the other end of the plate ll operatively connects thehand grip to theplate so that under movement of said hand grip 1 toward the long arm 6., said plate is slid away from the pinions l3 to disengage the toothed end l5 of the plate from said pinions. The rod 20 is slidably extended through a pivoted guide 24. A coil spring 25 surrounding the rod 20 between the. guide 24 and a collar 26 fast on the rod urges the latter and hence the plate l4 toward the pinions l3 and the toothed end l5 of said plate into mesh with said pinions.

The slotted extension 21. 3 provides for connecting part of the machinery.

As will now be understood, the toothed end l5 of the dogging and locking plate H, under the action of the spring 25, is normally engaged, or meshed, with the pinions l3 on one side thereof and since said pinions l3 mesh with the teeth 9 of the sector 3. the lever I is normally locked to the sector 3 and detained against oper ation. To unlock the lever l for operation, it is merely necessary to press the hand grip 1 toward said lever to effect movement of the dogging and locking plate l4 away from the pinions 13 in a manner which has already been set forth.

The foregoing will, it is believed, suflice to impart a clear understanding of my invention without further explanation.

Manifestly, the invention, as described, is susceptible of modification without departing from the inventive concept, and right is herein reservedto such modifications as fall within the scope of the subjoined claims.

What I claim is:

1. The combination with a hand lever, a toothed sector on which said lever is pivotally mounted, and a pivoted hand grip swingable on shown on the sector the sector to a fixed said lever, ot a pair of toothed pinions rotatably mounted on said lever and peripherally spaced laterally 0! said lever in mesh with said sector, a pinion d alling Plate siidably mounted on said lever for movement thereon toward and irom said pinions at the side thereoi opposite the sector and having a toothed end for meshing with said pinions, spring means urging said plate toward said pinlons, and operating connections between said grip and plate for moving the latter away from said pinions under swinging oi said grip in one direction.

2. The combination with a hand lever, a toothed sector on which said lever is pivotally mounted. and a pivoted hand grip swingable on mounted on said lever said lever, oi a pair of toothed pinions rotatably and peripherally spaced laterally or said lever in mesh with said sector a pinion dogging plate siidably mounted on said lever for movement thereon toward and from said pinions at the side thereof opposite the sector and having a toothed end for meshing with said pinions, spring means urging said plate toward said pinions, and operating connections between said grip and plate for moving the latter away from said pinions under swinging of said grip in one direction, said plate having edge guide flanges engaging opposite side edges of said lever for guiding the plate in its movement.

EDWARD G. WILTON. 

